When the bloody vortex of the strange world randomly selects "representatives of the national destiny" around the world, when live broadcasts of strange rules are synchronized to the sky of every country, when the survival of individuals is forcibly bound to the fate of the country - the young librarian Lin Yu becomes the third representative of China. The first two representatives have died in mysterious circumstances, and Lin Yu is facing a world of rules full of paradoxes, where every choice rewrites reality. While representatives from other countries showed off their force and courage in the live broadcast room, Lin Yu discovered that the most dangerous thing in this strange world was not the monsters, but the rules themselves. And the real victory may not be to crack the rules, but to understand why the rules exist.